The Barber Colman MA-5210-500 is a proportional linear actuator designed for high-precision damper or valve control in HVAC and industrial systems. Controlled by a variable DC input signal, this actuator delivers spring return functionality and includes an adjustable SPDT auxiliary switch for additional control logic. It features a hydraulic, oil-immersed motor with internal transducer and feedback circuitry to provide non-positive positioning based on the controller signal. Ideal for applications requiring smooth, linear motion and dependable fail-safe operation.
Technical Specifications
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Model: MA-5210-500
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Type: Proportional Linear Motion Actuator
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Control Signal: Variable DC Voltage (Nominal 3 Vdc span)
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Input Impedance: 10,000 ohms or greater
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Return Type: Spring Return
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Positioning Type: Non-positive (via internal feedback and transducer)
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Voltage Options: 24 VAC, 120 VAC, 240 VAC
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Auxiliary Switch: Built-in adjustable SPDT
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Motion Type: Linear output shaft
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Construction:
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Lower Housing: Die-cast aluminum
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Upper Housing: Painted steel
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Internal Components: Hydraulic pump, oil-immersed motor, and position transducer
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Condition: New
Key Features
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Proportional actuator with precise linear output control
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Spring return for automatic fail-safe positioning
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Adjustable SPDT auxiliary switch for control integration
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Non-positive positioning matches actuator output to input signal
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Rugged housing and hydraulic system built for industrial reliability
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Suitable for use with dampers or valves (requires proper linkage kit)
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Quiet, smooth operation from oil-immersed motor and pump assembly
Compatible Applications
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Industrial and commercial HVAC dampers
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Valve actuation in process control or energy management systems
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Combustion air and flue gas flow regulation
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Systems requiring modulating control with fail-safe return
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High-precision airflow or pressure regulation applications
Installation & Maintenance Notes
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Ensure the actuator voltage matches your control system
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Connect to a DC control signal with proper impedance
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Mount securely using compatible damper or valve linkage
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Adjust and test the SPDT auxiliary switch during setup
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Periodically inspect oil level, transducer integrity, and return spring action
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Confirm non-positive positioning accuracy during commissioning
We ship this product worldwide! Delivery is normally stock.
Request a Quote now or call us at 1-800-755-2883 for expert assistance